Cinnamon-Roll Pancakes

Ingredients

• Cinnamon Filling
• 6 tablespoons unsalted butter, softened
• ⅓ cup light brown sugar
• 1 tablespoon all-purpose flour
• 2 teaspoons ground cinnamon
• Pinch of salt
• Pancakes
• 2 cups all-purpose flour
• 1 tablespoon baking powder
• 1½ cups buttermilk
• 2 eggs
• 2 tablespoons unsalted butter, melted
• 1 teaspoon pure vanilla extract
• Nonstick cooking spray, as needed
• 1½ cups confectioners’ sugar
• 3 tablespoons whole milk
• ½ teaspoon pure vanilla extract